enantiomers

enantiomers (i·nanˑ·tē··merz),

n.pl molecules that are nonsuperimposable mirror images of one another resulting from the chirality exhibited by organic compounds (containing an asymmetrical carbon); enantiomers differ in their ability to rotate plane-polarized light. Also called enantiomorphs. See also chirality.

83) The chemical literature indicated at least ten separation techniques that could be tried, and Sanofi's actual approach--diasteromeric salt formation--required five months of experimenting with "diverse salt-forming compositions and conditions, in the hope of coming upon a lucky combination of reagents that will preferentially select one of the enantiomers and crystallize from the solution in optically pure form.

As to novelty, it was common ground, consistent with EPO and English case law (in contrast, for example, to that in Germany as to this issue), that the prior disclosure of a racemate did not in itself amount to a disclosure of each of its enantiomers.

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